It's been a year since U.S. special forces entered Abbottabad, Pakistan and killed Osama bin Laden. Host Michel Martin looks at the impact bin Laden's life and death had on the Arab world with journalist and policy analyst Rami Khouri. He says bin Laden tried to play on Arab anger, and failed.
If you make your own yogurt, there's a chance your yogurt could outlive you.
That's because some bacteria that grow and feed on the sugar in milk – the process that ferments milk into yogurt — can procreate indefinitely in new generations of yogurt.
But not all yogurts have these immortal powers. The typical store-bought yogurt only carries a few strains of bacteria that have been isolated by scientists. Those bacteria on their own can't regenerate very long — maybe just for a generation or two.